COVID-19 Update: Although the Gould Library building remains closed, the library staff continue our commitment to support the teaching and research needs of the Carleton community. Information on remote access to library resources and services will be updated regularly on the Remote Resources and Guidance for Library Users page and this FAQ. Please do not hesitate to contact us if you need additional assistance.
To arrange the books on our shelves, we use the Library of Congress Classification System. This system organizes material according to twenty-one areas of knowledge. The 21 categories (labeled A-Z except I,O,W,X and Y) are further divided by adding one or two additional letters and a set of numbers. This system is in use at the Library of Congress and at many other academic and research libraries in the United States.